Tramec Sloan Compression Nut, Series S761AB, is designed to secure SAE J844 nylon air brake tubing in compression-style fittings. Precision-machined from high-quality brass and proudly made in the USA, this nut delivers dependable sealing performance up to 150 psi and operates in temperatures ranging from -40°F to 200°F. Ideal for use in air brake systems and in-cab air controls.